LED Lighting and Health Benefits - How our biological clock is affected by proper lighting. As LEDs are becoming more commonly used in many aspects and applications, the question of health benefits arise. The following excerpt describes how LED's are in fact, beneficial, to your health - along with many other amazing benefits. An LED is made like other semiconductor products, with each diode being cut from a wafer of crystals layered over a base of silicon, sapphire, nitride, or some other ...